6466646 has 4 divisors (see below), whose sum is σ = 9699972. Its totient is φ = 3233322.

The previous prime is 6466633. The next prime is 6466661.

6466646 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1616660 + ... + 1616663.

It is an arithmetic number, because the mean of its divisors is an integer number (2424993).

Almost surely, 2^6466646 is an apocalyptic number.

6466646 is a deficient number, since it is larger than the sum of its proper divisors (3233326).

6466646 is a wasteful number, since it uses less digits than its factorization.

6466646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233325.

The product of its digits is 124416, while the sum is 38.

The square root of 6466646 is about 2542.9600861988. The cubic root of 6466646 is about 186.3057944338.

The spelling of 6466646 in words is "six million, four hundred sixty-six thousand, six hundred forty-six".